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Search Results 0 to 14 of about 15 (some duplicates have been removed)
if this book were hotter? what would it do to the table? energy would cascade from the book to the table until they both became the same temperature and they will level off. so that alcohol that's poured on your back has the same temperature as anything else around, but it feels cold. and why does it feel cold, gang? because what is that alcohol doing? what it's doing is what we're gonna be talking about today. it's changing state. it's changing from the liquid state to the gaseous state, okay? and we call that what? begin with ev? evaporation. evaporation, that's right. and we're gonna be learning that evaporation is a cooling process. you know, sometimes you're swimming and you come out and you're all wet, a little breeze come by and you feel kinda chilly. but if no breeze comes by, you don't feel so chilly. and what's going on? when that breeze comes by, what happens to the water on your body? evaporates. it evaporates. when it evaporates, how does your body feel? begin with a c. - cool. - cool. now, we're gonna ask the question hc. why is it that evaporation is a cooling process? and we ca
electrons are bopping around and those electrons-- hit their neighbors-- and that energy cascades all down the middle. so it turns out that things with lose electrons are good heat conductors. later on, we're gonna learn things with good-- with lose electrons are good electrical conductors. and how many say, "oh, that's probably a coincidence"? it's not a coincidence. it's a good electrical conductor for the same reason. those lose electctrons can flow right through a piece of metal, gang. and when that--now, we're talking about electricity. we'll be talking about that soon, yeah? but for now, those metal-- those little electrons will bop, bop, bop, bop, bop, which are lose in metals and carry that energy right along. so some things conduct better than other things. piece of wood, very, very good insulator. this wood is a good insulator at any temperature. this wood is a good insulator even if it's very, very hot. yep. did you ever reach in to a hot oven and grabbed on to a frying fan that's about maybe 400 degrees fahrenheit? you're gonna cook some food or something, you got a frying pan
that's one degree celsius. if something is one degree above freezing, would it be radiating energy? yes. would that energy have a frequency? how about i compare that to radiating at two degrees above celsius? would that be radiating energy? would that energy have a frequency? yes. would that frequency be doubled? no. check your neighbor. yeah. ah. hey, gang. would the temperature be-- would the frequency be doubled? get right to that point. get right to that question. the question is: wouldn't that work best for kelvin? yeah. honey, it will only work for kelvin because one degree celsius is not twice as hot as two is-- i should say two degrees celsius is not twice as hot as one degree celsius. see, to say twice as hot is to imply twice the internal energy. try this one. the waitress brings over some coffee because you've ordered coffee with your apple pie, and you say, "oh, i'd like the coffee really hot." and she brings it over, and you put your trusty thermometer in, and, son of a gun, it's iced coffee. ice cubes and everything. it's zero degrees celsius. and you say to the waitress,
leaks are shocking, the size and number. the fact that the department of energy did not know about this or they were not looking at the monitoring close enough or they did not disclose it to the public soon enough you >> officials -- soon enough. >> officials say the leaks pose no immediate danger. environmentalists want to see better oversight of the hanford cleanup effort >> which has been underway for two decades, at a cost of $2 billion per year. the nine nuclear read actors -- reactors turned out uranium for the nuclear weapons program, producing more than 60,000 warheads. the volume of waste is staggering. of solidubic meters nuclear waste. nearly 4 million liters of liquid have leaked, it enough to fill 20,000 bathtubs. the u.s. department of energy turned down al jazeera's request to film on the site. they also said no one we asked to interview the officials responsible for the cleanup -- no when we asked to interview the officials responsible for the cleanup. >> the state is extremely concerned that radioactive materials are being released in the environment. we expect the
. >> the tank leaks are shocking, the size and number of the thes, and the fact that department of energy did not know about this or they were looking at the monitoring close enough, or they didn't disclose it to the public soon enough. >> officials say the leaks pose no immediate danger to the environment or people in the area. environmentalists want to see better oversight of the hanford cleanup effort, which has been underway for two decades at a cost of $2 billion a year. throughout the cold war, hanford's nine nuclear reactors churned out plutonium for the u.s. nuclear weapons program, producing more than 60,000 warheads. the volume of waste left over is staggering. more than 200 million liters of radioactive liquid and 700,000 cubic meters of solid nuclear waste. over the years, nearly 4 million liters of liquid have leaked, enough to fill 20,000 bathtubs. >> the u.s. department of energy turned down al jazeera's request to film on the site and they also said no when we asked to interview responsible officials. the department said they are committed to safely cleaning up the site and is
of people -- to be able to imagine a different kind of political scene, a different kind of energy. >> beppe grillo has plenty of energy. before the elections, he pushed from one piozzi to the next, trying to get close to the people. he documented his road to success on the web. the internet is beppe grillo's most important means of communication. his blog is one of the most successful in italy. >> i have been writing here for seven years every single day. >> after the election, it is all down to his five-star movement. they could remain in opposition or form a coalition with the very politicians beppe grillo has been attacking force along. >> they are parasites. only out to make money and get rich. they see politics as their private little business. our movement proclaimed a revolution. >> revolution -- that is what beppe grillo has been calling for for decades. in 1986, when he made fun of the socialist when his corruption scandal was on public television, he reconstructed a conversation with the politician's secretary. >> more than 1 billion people live in china, all of the socialists, so
for energy or for building tissue; they are inert, which means we don't use them at all and they just pass through; or they're toxicants-- they have the ability to alter the biochemistry within our body. good shot! parents of toddlers and small children must be particularly careful about protecting young ones from toxic substances-- the cleaning compounds and plants, cosmetics and drug products familiar to most households. michael bryant: and so prevention begins to be the key, and looking for those, what i like to call, "hidden dangers" in your home that kids can get into, and trying to be proactive in terms of educating yourself and them about those dangers. and they exist in some of the most unlikely places. i mean, kids do things that we would never imagine that they would venture into, simply because of their curiosity. other health hazards may be less obvious, as a number of families in this chicago nehborhood lened, when an enterprising pest control service started using a chemical designed for agricultural use to destroy their household pests. milton clark methylonsrgano-phatstide.
at the center of a storm. the disciples surround him as though rolled back by a burst of energy, each reacting in a different way to the accusation, "one of you shall betray me." the disciples are young and old. they give expression to their feelings, but they also express the idea of the first christian mass. a monk witnessed leonardo at work in the monastery of santa maria delle grazie in milan. "many a time i have seen leonardo "go early in the morning to work "on the platform before the last supper, "and there he would stay, never laying down a brush, "painting without eating or drinking. "then three or four days would pass "without his touching the work, "yet each day he would spend hours examining it and criticizing the figures to himself." there are very few works still existing which reveal whateonardo did to transform 15th-century painting, yet his influence on subsequent generations was enormous. one of his final paintings, the virgin and saint anne of 1507, reveals some of the qualities saanne holdsm her virgin dauter mary as the infant christ reaches for the lamb of god. leonardo o
rural areas. so, for example, many of the dams in laos will be selling energy to thailand and that will go to bangkok. and, ironically, often people who are displaced by dams or who are impacted in some way in the rural areas will not see the benefits in terms of electricity. narrator: displacement of people living in areas targeted for dam construction is only one fact of hydroelectric development, whether privately or publicly funded. fox: all around the world, tens of llions of people have been displaced by large-scale dams. in laos, it does disproportiotely impact ethnic minorities who live in the highland areas where the dams are being built. so they're resettled away from the reservoir areas and they're also resettled away from the mountains and highlands above reservoirs. narrator: anotr oblem with resettlement in laos isacy ofamar os wasaughinssbombed e ail. x: 9 millions oorance droppedn os ianmuchf itains inanca unexpde. so when people are resettled example from highland areawheren to midr a lowland area where they must grow wetice ianmuchf itains inanca unexpd
on their lives. commercial cooking energy like natural gas and electricity command more potential. simple, but effective measures would help address the problem. >> ventilation holes, chimneys, and clean stoves, fixed on an elevated surface. enough space for them to keep stock off would -- a stock of wood which would not get wet. >> most women would welcome any improvement. the country would reduce its disease burden.
closer to new cures, harness new energy and have helped transform us in the high-tech homes of our global economy. we stand together because we share a commitment to helping our fellow human beings around the world. when the earth shakes and floods come, our doctors and rest was reached out to help. when people are suffering, from africa to asia, we partnered to fight disease and overcome hunger. piecend together because must come to the holy land. for even as we are clear-eyed about the difficulties we never lose sight of the vision of israel at peace with its neighbors. so, as i began this is it let me say as clearly as we can, the united states of america stands with the state of israel because it is in our fundamental national security interests, it makes us both stronger, it makes us both a more prosperous, and it makes the world a better place. that is why -- [applause] the united states it was the very first nation to recognize the state of israel 65 years ago. that is why the star of david and the stars and stripes flying together today. that is why i am confident in declaring tha
by restless energy. he could use his very fluent draftsmanship to give a sense of the most immediate, the most spontaneous recording and projecting of something seen in the modern world. that economy also spreads to the devices he uses, which bring the spectator of his works into the game. "i recognize that. i know that that's very up to date. i understand it. i am modern like the artist." and it's that interplay that he generates between the spectator and his audience that is very, very modern. (narrator) the painter of montmartre's decadence had an aristocratic start. born in 1864, henri raymond de toulouse-lautrec came from a noble and distinguished family-- count raymond of toulouse had helped capture jerusalem in the first crusade. henri's branch of the family came from the red-brick city of albi in the south of france. henri grew up in a world of chateaus and privilege in a family living on the fruits of its noble past. but a france governed by the middle class was losing its taste for nobility. like many aristocrats, his father alphonse retreated into rural pastimes-- riding and hunting
for renewable energy. still to come here on the newshour -- >> we'll tell you why this colony of penguins in argentina could be under threat. and we'll see a sweet strike. stay with us. ♪ ♪ >> welcome back. now it's breeding season for the penguins of argentina. each year they migrate to the same part of southern argentina at the same time to have their chicks. as we get a report, from the island, their future is now under threat. >> it is one of the largest penguin colonies in the world. around one million of them gather every year between september and april in the southern province. here they mate and build their nests and care for their chicks. but those working in the area are concerned that the penguins do not have enough food. we are seeing fewer and fewer penguin chicks. we believe it is hunger, when there is a chick, one parent goes to fish and the other one stays. they genuinely come back in one week. but this year we noticed they go and takes them weeks to come back and if they don't, the other parent goes and the chick dies. >> those who do make it back feed their chicks b
deep within the earth. their hidden presence may have charged the sacred precinct with spiritual energy. the olmec world was alive with unseen spirits that contrled all natural phenomena. thunder cracks ) rresent the power of these mysterious forces, olmec artists combined features of the most fearsome predators of the jungle, creating hybrid images of awe- inspiring supernatural beings. irual leaders, or shans, lied humans to the fors controinthe uner peleelieved that the sha could slo epraesr shans, and magically transform themselves tohepe oa jaguar transported by thianimal spirit, they road e cosmos gaining knowledge that allowed them to ensure rich harvests, heal the sick and protect the community. rulers also claimed the power to mediate between human and spiritual realms. some are shown cradling a supernatural infant-- part human, part jaguar-- who may have been their link to the spiritual world. similar figures appear on sculptures found at la venta thtirling med to be altars. but decades later, a clue to their true function was discovered far from the coast, at thentainous site
Search Results 0 to 14 of about 15 (some duplicates have been removed)